Improvement in pipe-wrenches



UNITED STATES PATENT GEFICE.

IsAIAn cREssEY, 0E GLOUCESTER, AssIGNoR To HIMsELE AND FRANK G. HALE, 0E RocxPoRT, MAssAciftusETTs.v

IMPROVEMENT IN v-PIPE-WRENCHES.

Speci'cation forming part of Letters Patent N o.

174,354, dated March 7, 1876 application filed n April 2, 1875.

To all 'whom vit/may concern:

' Beit known that I, ISAIAH CRESSEY, of

Gloucester, of the county of Essex and State ofMassachusetts, have invented a new and useful Improvement in Pipe-Wrenches and do hereby declare the'same to he fully described .in the following specification, and represented in the accompanying drawings, of which- Figure 1 is a side elevation, and Fig. 2 a longitudinal section, of a wrench provided with my invention, which consists, iirst, in a movable jaw pi'voted to a slide .on the shank of thehooked jaw, and provided with a spring, or with such spring and a handle; second, in the shank as provided with serrations or -ran ges of teeth, to cooperate with one of the .a handle, B, has a male screw, a a, to receive a unt, C, which encircles the. shank. This shank,at its upperpart, terminates in a hookjaw, E, whose inner surfaces are serrated or provided with two ranges oit' teeth, as shown l at b and c, other serrations or teeth d being made on the shank near its junction with the jaw. 'Ifhe serrations on the shank act with `the outer serrations'c ot' the hook-jaw, and

with those of the movable jaw, when a pipe is so large-that it will not come in contact with the serratonsp of the hook-jaw. 0n and encompassing the 'shank is ,a slide, F, having pivoted to it a movable and serrated or toothed jaw, Gr, having a handle, H, extending down from it, in manner as shown. To the inner side of said handle a spring, I, is fastened near its upper end, such spring, at or near its lower end, bearing directly against the slide F., The spring allows the movable jaw to readily slip 011 a pipe, while the wrench may be in the act of being turned back thereon; and, furthermore, the handle, with the spring, enables a person to readily move back the thereof. The spring keeps the jaw close up to the pipe. especially when the pipe may be more or less uneven on its outer surface.

By having the nut detached fromthe slider of the nut, and will be held in position or from falling back by the spring, which will force the movable jaw close up to the shank. The movable jaw having thus been set independently ot' the nut, the latter may be rapidly run up to and againstthe slide, so as to force the jaw closer up to the pipe.

able jaw-slide and its operative nut, so connected that one cannot be moved lengthwise ents No. 6,002 and 32,453; nor do I claim the movable jaw provided with a spring arranged as shown in either ot' said patents, nor with the handle or thumb-piece H. In my wrench piece H, and consequently readily accessible tor being cleaned or oiled. Having the nut C disconnected' with the slide F, so that the latter may be moved on the shank A independently of the nut, is productive of advantage in using the wrench, as it enables the adjustment of the movable jaw to be made much quicker than it can when connected with andthus eii'ects a saving in the cost of construction ot' the Wrench.

In the described pipe-wrench, I claim-,-

ll. The serrations d on the shank, in combil nation with those, b c, of the hookjaw.

' 2. The shank A, provided with the screw a a and the hook-jawv E, in combination with the nut C, and with the slide F, separate from the said nut, and with the movable jaw G, pivoted or hinged to the slide, and provided with the spring I, orv such spring and the handle H, all being arranged in the manner` substantially as specified.

ISAIAH CRESSEY.

Witnesses:

HANNAH TARR,

LIZZIE A. TARR.

movable jaw to fit it on a pipe over the end the latter may be moved up to a pipe (whenl in the hook-jaw) quickly and independently I do not claim, in the pipe-wrench, the movc or on the shank independently of the other, such being as shown inthe United States Patthe spring `I is fastened directly to the thumb.

the nut, and it does away with the connection, 

